My friend's cam not working (Mac)

My friend, who uses two different computers, has a cam that works on his screen but nobody else’s. He mentioned that his macs are old, like 2009, 2010. His cam used to work but now is having issues. Anyone have ideas on ways to reset or fix? He uses chrome. Camera doesn’t work on Discord but works on one other site.

Is your friend using the latest version of Chrome? It could be related to the age of the system. I could help if he runs the test on this site and check if it reports any errors:

This is the results of the test on my friend’s computer. He is using latest version of Chrome. Please advise

Is you friend using some kind of VPN software on his Mac? If yes, it might help to diable it.